#17305A#17305A

#17305A is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.4% C 0.082 H 260.1°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#17305A
RGB	rgb(23, 48, 90)
HSL	hsl(218, 59%, 22%)
HSV	hsv(218, 74%, 35%)
CMYK	cmyk(74.4%, 46.7%, 0%, 64.7%)
CIE-LAB	lab(20.18, 6.43, -28.11)
CIE-LCH	lch(20.18, 28.84, 282.88°)
OKLab	oklab(31.39% -0.014 -0.0803)
OKLCH	oklch(31.39% 0.082 260.1)
XYZ	xyz(3.2551, 3.0339, 10.0849)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17305A #5A4117

analogous

#17525A #17305A #20175A

triadic

#17305A #5A1730 #305A17

tetradic

#17305A #5A1752 #5A4117 #175A20

square

#17305A #5A1752 #5A4117 #175A20

split-complementary

#17305A #5A2017 #525A17

monochromatic

#060D18 #0B1629 #17305A #234A8B #3064BB

Accessibility & contrast

On white

13.07

#17305A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#17305A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17305A

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17305A	#FFFFFF	#000000	##FFFFFF
##17305A	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C345C

Deuteranopia (green-blind)

#102E59

Tritanopia (blue-blind)

#003A40

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #17305a;
/* rgb */ color: rgb(23, 48, 90);
/* oklch */ color: oklch(31.4% 0.082 260.1);

Tailwind

colors: {
  custom: {
    50: '#5d6789',
    500: '#17305a',
    950: '#000000',
  },
}

SCSS

$custom: #17305a;
$custom-light: #5d6789;
$custom-dark: #000000;

JSON

{
  "hex": "#17305a",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 90
  },
  "hsl": {
    "h": 217.612,
    "s": 59.292,
    "l": 22.157
  },
  "oklch": {
    "l": 0.31388,
    "c": 0.08153,
    "h": 260.1
  },
  "luminance": 0.03034
}

Semantic roles & 50–950 ramp

primary

#17305A

secondary

#91713C

accent

#A845E2

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #17305A

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →